Loom for making wire fabric.



PATENTED FEB-5, 1907.

G. GIUSSANI.

LOOM FOR MAKING WIRE FABRIC.

APPLIOATION FILED JULY 21, 1904.

4-SHEETS-SHEET 1.

S E S S E N w n V PATENTED FEB. 5, 1907.

G. GIUSSANI.

LOOM FOR MAKING WIRE FABRIC.

SHEETS-SHEET 2.

Q INVENTOR APPLICATION FILED JULY 21, 1904.

S E S s E N W w PATENTED FEB. 5, 1907.

APPLICATION FILED JULY 21, 1904.

4 SHEETS-SHEET 3.

WBTNEMBEQ PATENTED FEB. 5, 1907. G. GIUSSANI. LOOM FOR MAKING WIRE FABRIC.

APPLICATION TILED JULY 21, 1904.

4 SHEETS-SHEET 4.

:"HTNESSEES wires- P TENT OFFiOE.

eIOvANNI GrUssA I, OF EALING, LONDON, ENGLAND, ASSIGNOR TO SAMUEL SHAW CRISP AND HERBERT GRICE, TRADING AS FIRM DUKE, WARING, oRIs & 00., OF L NDON COUNTY, ENGLAND.

Specification of Letters Patent.

Application filed July 21, 1904. Serial No. 217,462-

Patented. Feb. 5, 1907.

in Looms for Making Wire Fabrics, of which the following is a specification.

I Sheets or .nets made of helically-twisted wire have hitherto been manufactured on a loom wherein the wires forming the warp are arranged and Operated upon in amanner closely resembling that adopted in an ordinary weaving-loom. The weft,however,is put in by hand, the end of along wire being introduced into the shed from one side of the loom and cut off at that side while it is being beaten up by the lay. Thus each weft is a separate.

after each beat up of the lay, the wire being turned round a pin projected at the correctmoment at the s1de of the loom, so as to form the selvage.

The invention includes machinery suitable for this. manufacture, as will be described in s, in which igures 1 and 2 are elevations of opposite sides of a loom com rising the elements of the invention, the (iievices for moving the shuttle-drum having been removed in Fig. 1. Fig.3 is a transverse section showing the mechanism for moving the shuttle-drum. Fig. 4 is a plan of Fig. 3, and'Fig. 5 is a detail sectional view of the mechanism which produces a pause in the movement of the healds after the formation of each shed. A

As in other looms, in the framework a of the loom are mounted on suitable axles drums I), each carrying a supply of helicallytwisted wire to form a warp-thread. When the loom is started, these warp-wires are brou ht down over uide-rollers b, but instea of or in addition to being passed with reference to the accompanying drawthrough holes or. loops in the healds c c, as in a common loom, theyare passed through tubes 0 c hinged to the healds c 0', re ectively, those passing through tubes a1 ernating with-those passing through tubes 0 These tubes form the shed through which the shuttle-drum (Z is assed and are necessitated by the difiiculty of kee ing taut such a heavy warp-thread as helica lly-twisted wire. In order to keep them from moving laterally, two combs c c are provided, the former carried by a bar 0, hinged to the heald c, the latter carried by a counterweighted bar 0, pivoted to a partof the framework. When the healds are moved in opposite directions to make the shed, as in a common loom, the comb c rests on the-ascending tubes, each of the latter being thus keptin place between two teeth of the comb. The descending tubes rest on the combo and are similarly kept in'place. From these tubes the warpwires are passed beneath a roller e, over aroller f, presently to be described, and under a roller g, being finally fastenedto the drum h, whereon the sheet is to be wound as it is made. I

The weft-wire is-wound on the drum d,

mounted to rotate in a horizontal plane on a slide d Fig. 3, which moves in a guideway '5, extending transversely of the loom. This guideway has transverse grooves '11", onecorresponding with each of the'tubes 0 03 .to accommodate the tube in its downward movement. I i

The wire is guided from the drum by an eye (1 in a frame (1 andis kept in place on the drum by a spring-band d, Fig. 4:.

The mechanism for moving the drum to and fro through the shed is shown in Figs. 3 and land comprises a slide k, also moving in the guideway 71, a rod is, connecting the slide with a -cross-headk, downwardly extending projections k k on the said crosshead, and an endless traveling chain k k on each side'of a frame H, which supports bars k whereon the cross-head k slides.

t The endless chains are driven at a suitable speed in op osite directions, as indicated by the arrows m Fig. 4, by sprockets k k and carry each a tappet k k". On a horizontal pivot on the slide is turns a hook k, which in the position shown in Fig. 3 is resting On the-tooth'of a crown-wheel is, turning on a vertical pivot carried by the 10 5 slide. A pawl k pivoted to a push-rod 1c,

.- moved rearward against the pre'ssure' of' pawl kigthe'f iligege t s ratchet-teethon th Q 5 of the crown-wheel k I ;When-; m thefcourse" oss-head; v 'is' pressed against-the. frame (1" and-{having spring k! has tinned by its crown-wheel k causin thehook 1st to'fifall- I from its supporting tooth and to takintoan eye d on the frame Yd. Immediately", afterward the tappetk strikes the projectionk on the cross-head 1c and moves .the latter back again, bringing drum d'with-it. The, play of the hook la in the eye d such that the beginning of the backward movement'of the head 7c? relieves the pressure ofthe rod k against the frame (1 thus allowing spring k" to urge'the rod forward, so that the pawl k takes into the next ratchet-tooth. The reciprocation "of the head k just described occurs during a pause 'in the movement of the healds, as will presently be explained,

and the next shed is not formed until drum d is at the end of the guideway 'i opposite to that at which it is shown in Figs. 3 and 4. By the time this next shed is formed tappet k has again come against projection k and the cross-head k is moved-to push the drum d back into the positionshown in Figs. 3 and 4. The play of the hook 7c in theeye d causes the initial movement of cross-head k in the forward direction to press the rod is against the frame (1, thus turning the crownwheel is and causing the hook k to ride up to the top of the next tooth ofthe crownwheel is, where it rests. In' this position the hook is out of engagement withthe eye (i so that when ta pet k brings cross-head k back again the rum (1 is left behind. After the parts have resumed-the osition shown in Figs. 3 and 4 the next she. is. formed and the cycle of movements is repeated. v The spro kets7c97c are mounted on coaxial shafts -and are driven through'differential gear 1, sprocket-chain l y Fig. 1, and

suitable speed-gear P from the spur wheel l on the main shaft l. f' i During the formation of each shed the weft-is beaten up by the reed m, and immediately after each beat-up the roller f is revolved one ste to withdraw the weft which has-just been eaten up from the sphere of action of the reed. For this purpose the surface of the roller ff with the meshes ormed by the interweaving of the warp andweft. For instance, the roller may consist of a number of sprocket-wheels mounted on a shaft; so as to rotate therewith. Following this movement of roller f two pins n, one at each end of the weft that has Just V v f, its movement i .-'d lT f 1 :f:9 7 he 3 6 "Qhai i bl'ing s i thej tappet k? aga nsti'the jprojeetionj 3 on thefc'ross head vlci thle latter is'movfed to the right, pushing the slidelk until gleaves the projection on the Y .IWhe'n', this. happens,": the push he; P9 5 is so made that it engages the hed tha e formed; the t w e ht o thep liin 0 h sis-n minee the drmn ismovirig; and; the, elvag'e -isthus descl iibe 'PI PQ Y onset-11 i ren {to O these. mov me iarenififi' n. the'maina o n "i i- 1A1iothe1aarmsm onth s shaft is pivoted *totheuppergend of the lay,..':?,of

m carrying the reed m; The"v lower; endof .,the" layis adjustably' connected lily link m to f I an-arm. p on a rocking shaft Another withthe'crank-pin 0 It willfbei seen that these links and levers move me sed-m in an elliptical path, causingit torise-freeofrthe warpaf'ter each beat-up; to descend'into the up this-,Wire-j As in'thecommon loom, the ratio; of the gear is such that beat-up bracket n and adjustably connected .by a

that twice in every revolution of the the ins are raisedi'and lowered.

shaft 0 drives a short shaftqygeared to the drum h, on which the sheet is woundasit' made and which is revented from backwa when the tensionflon; thefs able. 1 i A crankill 'qhfthe 'sp 7 connected y link-l9 withl'a for instance, on. the shaft oft arm 1 is connected by-iaflij of a lever s,-thefotherfgf en' oawhit sheds in a wellk-no fm'a'imer. Asalreadyhealds to allow for time for moving the drum d through the sh For this purpose an arm t 'o1 1 the rocking shaft thas an adjustable pin t which engages with a slot 8 in a link 8, pivoted to the lever. s. Pivoted independently of each other to thearmltf are two evers F i, and pivoted independently of each other to the} framework 1a: are two weighted pawls M a. The levers t tfirest against the ends, respectively, of a slot arm Qp on this shaft is connected lay-link o movement :by paw hil Theslip ing of lthe t belt o prevents oyerdrivi'n' of t e,

et iis' jc'bnsiders stated, it is necessaryglthat;there should be; a pause at the'endiipf leach movement of the formed by a strap fastened :to thelinks, s,- and the pawlsu it rest against inthe been'beaten up andonthesa'meside'hereof as the guideway- ;.'i.'," are projected upwardly through bracketswnf fixedzto the i'ramework; When the drum dis madam pass l'through' war'pj behind the weft-wire, and'then to beat jl *i'; Figl mejc ter r tdrur -h'. The? nected with the. shaft" t,' thatt deter-f mines'the crossing ofthehealds to form the) 3 framework. The position of these parts I (shown in Fig. 2) is the central position when l the healds are just about to cross each other. Presuming that the link 8 is moving to the E left, the position of the parts at the end of I the present stroke will be-that shown in the l detail sectionalview, Fig. 5--In the course of the movement from the position shown in Fig. 2 the end of the slot 8 engages the pin 21 1 and moves the arm t to the position shown 1 in Fig. 5, which corresponds with the forma: tion of the shed. In this position the pawl it catches the end of the arm t, and the lever t is in a nearly horizontal position. As the link s now moves in the opposite direction.- that indicated by the arrow in Fig. 5it raises the lever i so that its shorter end strikes against the pawl u and releases the end of the rm t. 'lhereupon the latter immediately alls, together with the healds, to the central position (shown in Fig. 2) and remains there until the end of the slot s engages with pin t The arm r is also connected by a link r with a couple of arms 1) v, fixed together and turning, respectively, on the shafts of rollers f and g, for'in'stance. Fixed to the shaft of roller f are a ratchetwheel f and a gear-wheelf The former is engaged by a pawl 22*, pivoted to the arm v, while the gear-wheelf is in gear with a similar wheel g on the shaft of the roller g, which shaft also carries a ratchet g, engaged by a .pawl v pivoted to arm a. When arm ris rocked to the left by the crank-pin on wheel Z, pawl 11 turns roller f through a small angle, while when arm 1' is rocked to the right pawl 12 turns through ratchet g, gear-wheel 9 which turns gear-wheel f and therefore roller f, through the same angle in the same direction as before, although pawl 01 is inoperative during this movement. Thus roller f is driven two ste s during each revolution of the loom,-one a ter each beat-up.

In order to adapt this loom for making sheets of various widths, smaller than the widest for which it is constructed, it is only necessary to substitute longer brackets 11. and to lengthen the pivot connecting each pin a with its link a J Having thus described the nature of my said invention and the best means I know of carrying the same into practical effect, I claim 1. A loom for the manufacture of fabric of helically-twisted wire in sheets having a selvage, comprising devices for stretching wires to form a warp, devices for forming successive sheds in such 'warp, a shuttle carrying a continuous weft-wire, a single device ada ted to move the said shuttle throu h the who e of each shed and then to be wit drawn before the next shed is formed, and a device at each side of the warp adapted to intercept the con-- tinuous weft-wire at each passage.

2. A loom for the manufacture of fabric of helically-twisted wire in sheets having a selvage, comprising devices for stretching wires to form a warp, devlces for formmg successive sheds in such warp, a shuttle carrying a continuous weft-wire, a single device adapted to move the said shuttle through the whole of .5 each shedand then to be withdrawn before fabric after the weft has been beaten up.

3. A loom for the manufacture offabric of helically-twisted wire in sheets having a selvage, comprising devices for stretching wires to form a warp, devices for forming successive sheds'in such warp, a shuttle carrying a continuous weft-Wire, a single device adapted to move the said shuttle through the whole of each shed and then to be withdrawn before the next shed is formed, and a-pin at each side of the warp adapted to be projected through the plane of the Warp before each passage of the said weft-Wire.

4. A. loom for the manufacture of fabric of helically-twisted wire in sheets having a selvage, comprising devices for stretching wiresto form a warp, devices for forming successive sheds in such warp,.a shuttle carrying a continuous Weft-wire, a single device adapted to move the said shuttle through the whole of each shed and then to be withdrawn before the next shed is formed, a device for beating up the said weft-Wire after each passage and a pin adapted to be projected in rear of the,

said weft-wire after each beat-up through the plane of the warp at that side thereof from which the said Weft-wire is next to be passed. 5. A loom for the manufacture of fabric of helically-twistcd wire in sheets having a selvage, comprising devices for stretching wires to form a warp, devices for forming successive sheds in such Warp, a shuttle carrying a continuous weft-wire, a single device adapted to move the said shuttle through the whole of each shed and then to be withdrawn before the next shed is formed, a device for beating up the said Weft-wire, a pin at each side of the warp adapted to be projected through the plane thereof in rear of the weft-wire last beaten up, a shaft adapted'to be rotated and a number of sprocket-wheels fixed on the said shaft and adapted to engage the mesh of the fabric as it is made.

. 6. A loom for the manufacture of fabric of helically-twisted wire in sheets having a selvage, comprising devices for stretching wires to form a warp, devices for forming successive sheds in such Warp, a device for assing a continuous weft-wire to and fro t rough such sheds, a reed, mechanism for moving this reed in such a path that it descends in rear of the weft-wire, movesforward to beat up the weft, and then ascends, a pin at each side IIS IZO

ofthe warp adaptedto be rojected through the plane'thereof in rear the'weft-wire last beaten up,"a shaft adapted to be rotated and lo and tubes hinged to the said ealds through which'tubes. thesaid wires pass.

8. In a loom tor the manufacture of fabric of helically-twisted wire in sheets having a selvage, in combination, a framework, war wires, healds, tubes hinged to the said heal s through which tubes the said wires pass, and means carried by one healdand other means carried by the framework adapted to keep the said tubes from lateral movement.

9. In a loom for the manufacture of helically-twisted wire in sheets having a selvage, in combination, healds, tubes hinged to the said healds, a continuous weft-wire, a guideway extending transversely of the loom and '2 5 transverse slots in the said guideway adapted to receive the said tubes. 10. A loom for the manufacture of fabric of helically-twisted wire in sheets having a selvage, comprising devices for stretching wires to form a warp, healds, tubes hinged to the said healds through which'tubes the said warp-wires pass means' for keeping thesaid tubes from lateral movement, means for 'movy ing the said healds to form successive sheds,-

; means for causing a pause at the end of eaeh g 51;: stroke of the said healds, a guideway xtend= jing transversely of the loom, transverse slots I iuthe said guideway adapted to receive fthe said tubes, a slide adapted to move inj-the- I said guid'eway,-a drum pivotally mounted on 4o the said slide, there being a continuous weft wire wound on the said drum, means for moving the said slide to and fro in the saidgu'ideway, a reed adapted to descend in rear of the said weft-wire and to beat it up, a pin at each side of the warp adapted to be roj'ected through the plane thereof in rear o the said weft-wire immediately after it has been beaten up, a roller adapted to be rotated through a small an le after each beat-up, and means on the sai roller adapted to engage in the meshes of the fabric as it is made.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

GIOVANNI GIUSSANI.

Witnesses EDWARD GARDNER, H. SIMMONS. 

